Inexpensive Organic Materials and Their Applications towards Heavy Metal Attenuation in Waters from Southern Peru
| Autor: | Gary Vanzin, Nicole M. Smith, Johan Vanneste, Christopher Bellona, Jonathan O. Sharp, Aaron Malone, Julia Zea, Francisco Alejo, Vilma García, Pablo Garcia-Chevesich, Sarah Acker, Juana Ticona, Gisella Martínez |
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| Rok vydání: | 2020 |
| Předmět: |
lcsh:Hydraulic engineering
Sulfide Environmental remediation Geography Planning and Development 02 engineering and technology 010501 environmental sciences Aquatic Science Reuse 01 natural sciences Biochemistry lcsh:Water supply for domestic and industrial purposes Nutrient lcsh:TC1-978 Peru remediation Organic matter heavy metals 0105 earth and related environmental sciences Water Science and Technology chemistry.chemical_classification lcsh:TD201-500 sorption Sorption water treatment 021001 nanoscience & nanotechnology chemistry Environmental chemistry visual_art visual_art.visual_art_medium Environmental science Water treatment Sawdust 0210 nano-technology |
| Zdroj: | Water, Vol 12, Iss 2948, p 2948 (2020) |
| ISSN: | 2073-4441 |
| Popis: | There is interest in using locally available, low cost organic materials to attenuate heavy metals such as Cd, Cr, Cu, Hg, Ni, Pb, and Zn found in surface waters in Peru and other developing regions. Here we mesh Spanish language publications, archived theses, and prior globally available literature to provide a tabulated synthesis of organic materials that hold promise for this application in the developing world. In total, nearly 200 materials were grouped into source categories such as algae and seashells, bacteria and fungi, terrestrial plant-derived materials, and other agricultural and processing materials. This curation was complemented by an assessment of removal potential that can serve as a resource for future studies. We also identified a subset of Peruvian materials that hold particular promise for further investigation, including seashell-based mixed media, fungal blends, lignocellulose-based substrates including sawdust, corn and rice husks, and food residuals including peels from potatoes and avocadoes. Many studies reported percent removal and/or lacked consistent protocols for solid to liquid ratios and defined aqueous concentrations, which limits direct application. However, they hold value as an initial screening methodology informed by local knowledge and insights that could enable adoption for agriculture and other non-potable water reuse applications. While underlying removal mechanisms were presumed to rely on sorptive processes, this should be confirmed in promising materials with subsequent experimentation to quantify active sites and capacities by generating sorption isotherms with a focus on environmental conditions and specific contaminated water properties (pH, temperature, ionic strength, etc.). These organics also hold promise for the pairing of sorption to indirect microbial respiratory processes such as biogenic sulfide complexation. Conversely, there is a need to quantify unwanted contaminant release that could include soluble organic matter and nutrients. In addition to local availability and treatment efficacy, social, technical, economic, and environmental applicability of those materials for large-scale application must be considered to further refine material selection. |
| Databáze: | OpenAIRE |
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